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v3.25.3

Sale of Receivables - Narrative (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Transfers and Servicing [Abstract] |  |  |
Sale of receivable, aggregate capacity | $ 225 |  | $ 225
Sale of receivables, purchase discount fees | $ 0 | $ 0 |

X
- Definition Transfers Of Financial Assets Accounted For As Sale, Purchase Discount Fees + References No definition available. + Details
Name: | drs_TransfersOfFinancialAssetsAccountedForAsSalePurchaseDiscountFees
Namespace Prefix: | drs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Transfers Of Financial Assets Accounted For As Sale, Securitization Facility Availability + References No definition available. + Details
Name: | drs_TransfersOfFinancialAssetsAccountedForAsSaleSecuritizationFacilityAvailability
Namespace Prefix: | drs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_TransfersAndServicingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration